Step 1: The Needings

You will need...

A silicon wristband.

A very sharp knife

Gorilla Glue*

Clear adhesive tape

You may also need something to decorate the band, but I'll leave that to your own imaginings.

*Before using Gorilla Glue, I tried this with super glue (failed) and welding with the heat of a soldering iron (failed). If you find another method for sticking silicon bands together, please leave a comment about it.

Step 2: The Cutting

Cut across the wristband. If your blade cannot be pressed straight down, use a metal ruler to ensure as straight a cut as possible.

(If you're going to decorate your band, now is the time to do it, because you can lay it flat.)

Turn one cut end through 180°, and tape the two cut ends back together, on only one side.

Step 3: The Gluings

Using the tape as a hinge, open the cut you just made, exposing the two cut surfaces.

If you're using Gorilla Glue*, use a twist of paper towel to lightly dampen one face, and another twist to apply a light smear of glue to the other.

Close up the joint, and use another piece of tape to close it tightly.

Leave the band taped up for at least two hours before checking the strength of the joint.

(*If you're using a different glue, such as a cyanoacrylate "crazy" or "super" glue, make sure you follow their instructions...)

Step 4: The Meanings

What you have made, of course, is a Möbius band. Escher didn't invent it, but he used it a lot in his work.

This novel structure has only one surface, and one edge. It can thus be seen as even "more endless" than a simple circle. Eternal and unending.

I made this one from a plain band, with no logo or legend, but you could use a band for your favoured charity or saying. It is even possible to get custom-made bands that say whatever you want them to.

Whatever kind of band you use, turning it into a Möbius band adds that extra layer of meaning to it.

If in theory a mobius strip has only one side, then a three dimensional version should truly be identified as a triangle. It may take a while to understand if you are not highly interested in geometry and physics. If you don't understand at all it may help to know that if you put your fingers on the "two" main sides, you are really just touching one side in two spots. Your mind has just been blown, you can in theory say you are touching a tangible triangle!

Right, I guess I may have used improper terminology in calling it a triangle. However it is a three dimensional shape with only three sides, so in other word I do not know what to call it. I would also like to point out as I did before that if you touch the two sides you are touching two points of the same plane only from different angles. I could also have been wrong, but the way I see it in brain is hard to put into words.

I love Escher and your idea. The only thing I would suggest as a Escher "twist" on the Mobius band would be to put "WW" on one end (side A of your cut band) and "ED" on the other end (side B of your cut band). This would put "WW" and "ED" on either side of the twist in your band. I look forward to making and proudly wearing my own "WWED" band; thank you for this instructable.

Hey thanks for sharing, Kiteman! The Möbius strip has always fascinated me and I really love your take on how it can be used to accentuate or elevate the wristband message.

I love XKCD too!

Thanks again!

PS As a scientist and teacher, I thought you may enjoy a little Nick Kim - fellow Scientist and Sceptic (http://www.lab-initio.com). Cartoons from his site are free to use for personal, non-profit, research, and educational purposes. Science related are ordered here - a selection of his 'best' (to give you some idea of his humour), here.

Hey Kiteman! I also just discovered another profile that is a spammer (or spam-bot)http://www.instructables.com/member/bfdslf9a/It seems to me to be the same person (thing?)The 'ible I found the spam on:http://www.instructables.com/id/Giant-match-chair-La-Pucelle/(I really am starting to get annoyed at spammers!)